Effect of Temperature on H2O2 Content and Respiration in Dormant Flower Bud of Nectarine Variety

doi:10.7668/hbnxb.2008.S1.031

Abstract

Abstract: In order to discuss the res-t breaking mechanism of flower bud, the effect of temperature was studied on H₂O₂ content and respirat ion with dormant flower buds, using nectarines (Prunus persica var. Maxin) as materials. The results showed that the treatments with low temperature enhanced the H₂O₂ content of flower buds in dormancy, and the H₂O₂ content decreases after rest released. The reason for rest released may be the H₂O₂ content increasing. The rate of respiration of flower buds continued to raise during the course of releasing dormancy. Among of which, the rate of phosphogluconic acid pathway(PPP) was also increased, but the rate of EMP pathway was decreased, and the rate of Tricarboxylic.Acid cycle (TCA) was the main and changed little. High temperature decreased the rate of respiration of flower buds.

Key words: Temperature, Dormancy, H₂O₂, Respirat ion

CLC Number:

S662.1

XU Wen-rong, YAN Tian-li, Qin Xu. Effect of Temperature on H₂O₂ Content and Respiration in Dormant Flower Bud of Nectarine Variety[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S1): 125-127. doi: 10.7668/hbnxb.2008.S1.031.

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Effect of Temperature on H₂O₂ Content and Respiration in Dormant Flower Bud of Nectarine Variety

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